The brilliance of Lionel Messi is what transforms Argentina from a talented group of individuals to potential world champions.
If the Albiceleste go one better than the previous tournament and lift the trophy it will surely be because Messi has had a superb World Cup.
The 30-year-old is acutely aware of the pressure on his shoulders and it would increase severely should Argentina fail to get off to a winning start against the smallest country ever to feature at a World Cup.
Latest odds
For a squad with so many exceptional forward players, Argentina were strangely blunt in attack during their CONMEBOL qualifying campaign.
GettyThe two-time World Cup winners scored just 19 goals in 18 games (only Bolivia scored fewer) and of those, seven were scored by Messi - who is 4/7 (1.57) with bet365 to score his sixth World Cup goal.
Elsewhere for Argentina, Gonzalo Higuain, much maligned for his misses at the last World Cup and in subsequent editions of the Copa America, is priced at 19/20 (1.95) to score at anytime.
Sergio Aguero looks like edging Higuain for a starting berth is priced at 6/5 (2.20), while Angel Di Maria is available at 13/5 (3.60).
Iceland hoping to for an upset
Defensively, Argentina had the second best record in CONMEBOL qualifying behind Brazil, but they still conceded plenty of goals to unfancied opposition such as Venezuela, Bolivia and Ecuador.
Iceland will be hoping to take advantage of any Argentine nerves and their shortest priced player to score is Albert Finbogasson at 9/2 (5.50), with Gylfi Sigurdsson available at the same odds.
Tips and predictions
While Argentina have plenty of dangermen in the final third, it is so difficult to look past Messi and the price of 21/10 (3.10) for him to open the scoring is worthy of consideration.
Argentina's number ten also takes free-kicks and penalties for his national side, increasing his chances of breaking the deadlock.
Lionel Messi to score first at 21/10 (3.10) for a 1pt stake with bet365